Deck 13: Graphics, Animation, Sound, and Drag-And-Drop

Question 1

In the VB graphics environment (GDI+),the programmer does not have to be concerned about the physical characteristics of the output device.

Answer 1

True

Question 2

An easy way to show some animation on a form is by replacing one picture with another.

Answer 2

True

Question 3

To remove a picture from the user's view,the Visible property of the PictureBox is set to False.

Answer 3

True

Question 4

A pixel is a dot that makes up a picture.

Question 5

The term pixel is an abbreviation of "picture element."

Question 6

Use the Pen object to draw lines on a form.

Question 7

The Graphics methods that are used to draw a circle on a form or control can be used with either a Windows Form or a Web Form.

Question 8

If you don't set the width of a Pen,it defaults to one pixel.

Question 9

The Top and Left properties of an object determine the position of the upper-left corner of the object on the form.

Question 10

Point,Size,and Rectangle structures can be used to specify starting positions in the graphics methods.

Question 11

The form's Paint event executes when the window is displayed,resized,moved,maximized,restored,or uncovered.

Question 12

A GroupBox has its own 0,0 coordinate system.

Question 13

Pictures can be loaded,moved,and resized only at design time.

Question 14

By controlling the location and visibility of controls,animation effects can be created by using similar pictures.

Question 15

In the coordinate system,the X is the horizontal position and the Y is the vertical position.

Question 16

Animation can be achieved by displaying an animated .gif file on a Windows Form,but not a Web Form.

Question 17

Pictures can be loaded,moved,and resized at run time.

Question 18

A Pen object is used to fill in a pie chart.

Question 19

The term,graphics,refers to any text,drawing,image,or icon you display on the screen.

Question 20

Using a control's SetBounds method produces a smoother-appearing animation than the animation that is produced by changing the Left and Top properties of a control.

Question 21

The Scroll event of a scroll bar occurs anytime the scroll box is moved.

Question 22

The source object is the item you wish to drag.

Question 23

The DragEnter event fires when the user drags a source object over the target.

Question 24

The Timer component causes events to occur without user action.

Question 25

The Windows Media Player control can play audio and video files in many formats,including .avi,.wmv,and .wav.

Question 26

The Value property indicates the current position of the scroll box and its corresponding value within the scroll bar.

Question 27

The term,graphics,refers to which of the following?

A)text
B)drawings
C)image
D)all of these

Question 28

The scroll bar's SmallChange property is changed when the user clicks on the scroll arrow in a scroll bar.

Question 29

The coordinate system uses _______.

A)X as the horizontal position and Y as the vertical position
B)X as the vertical position and Y as the horizontal position
C)the lower right-hand corner of a form
D)the Left property and the Width property

Question 30

The target object uses a control's DoDragDrop method.

Question 31

The form you are designing requires a blue line graphic that is 10 pixels wide.What is the declaration statement for the Pen object?

A)Dim BluePen as New Pen (Color,10)
B)Dim BluePen(10)as New Pen (ColorBlue)
C)Dim Pen(Blue)as New Pen(10)
D)Dim BluePen as New Pen(Color.Blue,10)

Question 32

A graphic is being placed on a button control on the form.Which object's starting point is used for the graphic?

A)The form
B)The button
C)A GroupBox
D)A PictureBox

Question 33

When designing a form having graphics,the programmer creates a Graphics object to _______.

A)draw with
B)determine the characteristics of output devices
C)use as a drawing surface
D)none of these

Question 34

You will code a Click event when you write code for a scroll bar.

Question 35

Pen objects are used for _______.

A)lines
B)filled shapes
C)outline of shapes
D)both A and C

Question 36

You must set the AllowDrop property to True in order to set a control to be a target.

Question 37

If the user drags the scroll box in a scroll bar control,the scroll bar's Scroll event occurs.

Question 38

To make sure that the graphics on the form get redrawn every time the form is rendered,place the code in the form's _______ procedure.

A)Load
B)Activate
C)Redraw
D)Paint

Question 39

The Interval property of the Timer is calculated in milliseconds.

Question 40

The ScrollBar_Click event occurs when the user clicks the up arrow of a vertical scroll bar.

Question 41

Use _______ in order to add sound to your project.

A)the SoundPlayer component
B)the Sound control
C)My.Computer.Audio.Play
D)Both answers A and C are correct.

Question 42

Which property of the SoundPlayer component determines the location of the wave file?

A)Wave
B)Sound
C)Location
D)SoundLocation

Question 43

The _______ has two components,the width and height.

A)Point structure
B)Size structure
C)Rectangle structure
D)Graphics method

Question 44

Each of the drawing methods allows you to specify the _______.

A)starting point for the upper-left corner of the drawing object
B)size of the drawing object
C)both A and B
D)neither A nor B

Question 45

Which event occurs as the user drags the scroll box along the scroll bar?

A)Click
B)Drag
C)Move
D)Scroll

Question 46

Which scroll bar property contains the number that indicates the current location of the scroll box in the scroll bar?

A)Min
B)Width
C)Index
D)Value

Question 47

The SmallChange property of a scroll bar _______.

A)determines the distance to move when the user clicks on the scroll arrow
B)decreases when the user presses on the down arrow of a vertical scroll bar
C)is the minimum value of the scroll bar
D)increases when the user presses on the down arrow of a vertical scroll bar

Question 48

The _______ event fires when the user releases the mouse button over the target.

A)DragDrop
B)DragEnter
C)MouseEnter
D)DoDragDrop

Question 49

The LargeChange property of scroll bars controls the _______.

A)distance to move when the user clicks on the gray area of the scroll bar
B)distance to move when the user clicks on the scroll arrow
C)maximum value of the scroll bar
D)minimum value of the scroll bar

Question 50

The _______ event fires when the user drags a source object over the target.

A)DragDrop
B)DragEnter
C)MouseEnter
D)DoDragDrop

Question 51

Which of the following is NOT an effect of the DoDragDrop method?

A)Copy
B)Move
C)None
D)All of these are effects of the DoDragDrop method.

Question 52

When the user clicks the up arrow of a vertical scroll bar,the Value property decreases by the amount of the _______ property.

A)Minimum
B)Maximum
C)SmallChange
D)LargeChange

Question 53

Which of the following will allow you to move controls across the screen?

A)A PictureBox control's Move method and a Timer control's Tick event
B)A PictureBox control's Visible property and a Timer control's Move event
C)A PictureBox control's SetBounds method and a Timer control's Tick event
D)A PictureBox control's Move event and a Timer component's Click event

Question 54

The _______ class contains various methods for returning random numbers of different data types.

A)Generate
B)Random
C)Rnd
D)Randomize

Question 55

To have a PictureBox control move every 3 seconds,the Timer's Interval property is set to _______.

A)3
B)30
C)300
D)3000

Question 56

The Timer component _______.

A)has a Tick event that occurs at specified intervals
B)can be used to animate objects without user intervention
C)can be disabled by setting the Enabled property to False
D)All of the answers are correct.

Question 57

The _______ holds the X and Y coordinates as a single unit.

A)Point structure
B)Size structure
C)Rectangle structure
D)Graphics method

Question 58

To produce smooth movement of a control on a form,use the control's _______ method.

A)MoveBounds
B)LeftBounds
C)SetBounds
D)TopBounds

Question 59

To make sure the Scroll Bar events occur anytime there is a change in the Value property of the control,which two events need to contain code?

A)Click event and Scroll event
B)Value event and Click event
C)ValueChanged event and Scroll event
D)ValueChanged event and Click event

Question 60

The _______ property of a scroll bar determines the distance to move when the user clicks the gray area of the scroll bar or presses the Page-Up or Page-Down keys.

A)Minimum
B)Maximum
C)SmallChange
D)LargeChange

Question 61

Write the code to draw a rectangle on a form.

Question 62

Explain the use of the X and Y coordinates in the drawing methods.